Library apparatus

Abstract

A library apparatus includes a robot in operation that performs transfer between the record medium storage shelf and the input-output device, a robot on standby that stands by at a predetermined position as a reserve of the robot in operation; and a control device that controls operations of two of the robot in operation and the robot on standby. The information record medium has a bar code for identification. The robot in operation and the robot on standby individually include a read unit which has an imaging device to optically read the bar code of the information record medium. The robot on standby further includes an air spray unit which blows air to the imaging device of the robot in operation which moves relatively to a predetermined position and attitude.

1. A library apparatus comprising:
 a housing; 
 a record medium storage shelf that stores a plurality of information record media; 
 an input-output device in which the information record medium is loaded and which inputs and outputs information in and from the loaded information record medium; 
 a first robot that performs transfer between the record medium storage shelf and the input-output device; 
 a second robot that stands by at a predetermined position as a reserve of the first robot; and 
 a control device that controls operations of two of the first robot and the second robot, wherein 
 the information record medium has a bar code for identification, 
 the first robot and the second robot individually include a read unit which has an imaging device to optically read the bar code of the information record medium, and 
 the second robot further includes an air spray unit, the second robot carries the air spray unit toward the first robot and the air spray unit blows air to the imaging device of the first robot. 
 
     
     
       2. The library apparatus according to  claim 1 , wherein the first robot further includes an air spray unit, the first robot carries the air spray unit toward the second robot and the air spray unit blows air to the imaging device of the second robot. 
     
     
       3. A library apparatus comprising:
 a housing; 
 a record medium storage shelf that stores a plurality of information record media; 
 an input-output device in which the information record medium is loaded and which inputs and outputs information in and from the loaded information record medium; 
 a first robot that performs transfer between the record medium storage shelf and the input-output device; 
 a second robot that stands by at a predetermined position as a reserve of the first robot; and 
 a control device that controls operations of two of the first and second robot, wherein 
 the information record medium has a bar code for identification, the first robot and the second robot individually include a read unit which has an imaging device to optically read the bar code of the information record medium, the second robot further includes an air spray unit which blows air to the imaging device of the first robot, 
 the housing has a reference mark for measuring a reference position of the first robot, and 
 the control device causes the first robot to read the reference mark when an error occurs in reading the bar codes by the first robot, and causes the air spray unit of the second robot to blow air to the imaging device of the first robot if an error occurs in reading the reference mark. 
 
     
     
       4. The library apparatus according to  claim 2 , wherein
 the housing has a reference mark for measuring a reference position of the first robot, and 
 the control device causes the first robot to read the reference mark when an error occurs in reading the bar codes by the first robot, and causes the air spray unit of the second robot to blow air to the imaging device of the first robot if an error occurs in reading the reference mark. 
 
     
     
       5. A library apparatus comprising:
 a housing; 
 a record medium storage shelf that stores a plurality of information record media; 
 an input-output device in which the information record medium is loaded and which inputs and outputs information in and from the loaded information record medium; 
 a first robot that performs transfer between the record medium storage shelf and the input-output device; 
 a second robot that stands by at a predetermined position as a reserve of the first robot; and 
 a control device that controls operations of two of the first and second robot, wherein 
 the information record medium has a bar code for identification, the first robot and the second robot individually include a read unit which has an imaging device to optically read the bar code of the information record medium, and 
 the second robot further includes an air spray unit which blows air to the imaging device of the first robot, and 
 the control device causes the air spray unit to blow air to the imaging device while causing the first robot and the second robot to move relatively to each other. 
 
     
     
       6. The library apparatus according to  claim 2 , wherein the control device causes the air spray unit to blow air to the imaging device while causing the first robot and the second robot to move relatively to each other. 
     
     
       7. The library apparatus according to  claim 3 , wherein the control device causes the air spray unit to blow air to the imaging device while causing the first robot and the second robot to move relatively to each other. 
     
     
       8. The library apparatus according to  claim 4 , wherein the control device causes the air spray unit to blow air to the imaging device while causing the first robot and the second robot to move relatively to each other.